We run a small hydroponic lettuce farm on our rooftop and need to plant about 600 lettuce seeds per week. This took between 2 and 3 hours to do it manually, seed by seed. We recently built an iPrusa 3D printer and I got inspired to build something to...
This adapter provides the connection of 2 controllers on each MSX joystick port. It works with Master System and Genesis 3 and 6 button controllers and provides the following operating modes, selected at power up:Basic ModeIn this mode the buttons are...
Okay here's the specs:Dimensions: same as the original, measured from photos.Display: LEDs for every dot (found one one that light up in the exact same color as the phosphors in the original VFDs). That's 266 LEDs. LEDs shall be housed in a plastic matrix...
I´ve been using for years the FTDI cable, is a really handy tool for debugging and really compact, so I end up in most of my projects having a dedicated pin header for this cable. The problem begins when you need more of these little guys, because...
Here's the quick once-over for some project details:Inputs:-Bluetooth audio input, capable of AAC and Apt-X transport if possible-SPDIF input, stereo, 28kHz 24-bit-3.5mm jackOutputs:2 tweeters, stereo2 woofers, paired together (mono)Why the two woofers...
Introducing a small board that "reads" the numbers on an old rotary dialer phone and outputs the proper DTMF tones to perform calls over a modern phone line (more info available on my website). How it works? The board can be divided into three different...
If you watch the Mother Of All Demos, you can see Douglas use the keyset in conjunction with the mouse. The keyset by itself only has five buttons. That's enough for the 26 letters in the alphabet, but not much more. In order to expand the space, more...
Syringe Driver w/ Acoustic Levitator (bad audio warning!): Syringe Driver Demo: About the gears and drive mechanism: A large gear is attached to the output of the DC motor. This large gear interfaces with a smaller gear which is fitted to a helical corkscrew...
In this project, we are trying to drive a BLDC motor in very low speed. This means we need to have a very low PWM values update rate. However, the PWM values update rate is constant, the rotating speed of motor's rotor may not being what you expected....
Future hacks: Racks for kayaks, canoe and lumber.Add plywood fascia to rear doors. HELP!: Anyone know how to get a CAD file from Ford of the inside of the Transit ? Beckie = Credit to my wife for most of the sewing. Comments welcome. Please let me know...
So I wanted a small clear container to hold my mini projects. I found these Amac plastic boxes at The Container Store and they are fairly inexpensive. The 1"x2" ones are about $0.59 apiece. So I bought a clear one and a smokey one.Taking some quick measurements,...
Power I 'upcycled' a portable battery bank that you can buy almost anywhere for just a few dollars. These little banks almost always have the same kind of standard Li-Ion 3.7 volt batteries inside. They are reliable and easy to work with (Li-Poly battery...
The original design by Makeblock was ok, but the software they provided was awful. What began as a plan to switch out the electronics with GRBL compatible replacements, somehow ended up as somewhat of a redesign. In particular I wanted the z axis to...
SB Components is Kickstartering a “UHF HAT for Raspberry Pi” with high-frequency UFC RAIN RFID technology for reading up to 200 tags per second. If you read this before noon PST, you have a few minutes left to get the Kickstarter early...
The Candy-Pult was a last minute follow-on project to the "Candy Cannon" project which sadly didn't make it through the engineering phase due to a lack of accuracy a tendency to pulverize the candy.Here is a youtube video of the Candy-Pult in action:The...